Gaseous fuel



UNITED STATES PATENT OFFICE.

JAMES R. BOSE, OF EDGEWORTH, PENNSYLVANIA, AND JOHN HARRIS, OF LAKEWOOD,

OHIG, ASSIGNORS TO (JARED-OXYGEN COMPANY, OF PITTSBURGH. PENNSYLVANIA,

A. CORPORATION OF DELAWARE.

GASEOUS FUEL.

No Drawing.

. To all whom it may concern:

Be it known that we, (1) James H. Ross,

. (2) JOHN HARRIS, citizens. of the United cially adapted for the purpose of cutting metals with great rapidity, where extreme cleanness of cutting is not essential. A use for which our gas is particularly well suited is for the cutting of scrap iron.

\Ve obtain a gas having the above-desirable characteristics by mixing withhydrogen as a combustible base, by-product cokeoven gas and propane in the proportions of from 2%75 to 12.;70 by volume each of such by-product coke-oven gas and such propane to the hydrogen constituent. The by-product coke-oven gas has nearly the same flame temperature as the hydrogen, and the mix ture of the propane therewith makes the temperature of the combined gases in excess of that obtained by the combustion of hydrogen alone and equal to at least 3200" C. Furthermore, the by-product coke-oven gas is also readily obtainable asa source of gas for cutting purposes in steel mills. The gaseous mixture produces within the. burning hydrogen a visible cone which enables the operator to adjust the proportionsof the gases and of the combustion-supporting oxygen as may be necessary, as well as to.

apply the flame in the most advantageous manner to the work.

Both the volume of the flame and the. ,heat units produced by the combustion of the mixture are greater than are produced by the combustion of hydrogen alone. but

are lower than usually requiredfor operat- .ing on heavy masses of metal and for cutting cast iron and steel and corroded, dirty and slaggy iron and steel. However,'our gaseous mixture is capable of cutting with much' greater-rapidity than can be accomplished bygases having such higher carbon content.

Taking Koppers by-product' coke-oven Specification of Letters Patent. Patented Ja 2.1 1922 Application filed December 23, 1919. Serial No. 347.453.

gas as a type, the average analysis of the same is as follows:

00 o 2.6 Illuminants 4.3 Oxygen 0.2 CO l 6.3 Hydrogen f 4:6.3 CH 35.0 Nitrogen B.- T. [:T/ Cu. ft. of oxygen required for combustion of a cu. ft. of gas 1.09

According to Richards on )[etallugurical Calculations, published in 1908, and with the by-product coke-oven gas of approximately theanalysis above set forth,-the flame temperature produced by the combustion of the above described gaseous mixture will be at least 3200 C.,'ll1(l the "variations in the percentages of the said gases will cause approxlmately the following variations in the net B. T. U. per cu. ft. of mixture and in the'cubic feet of oxygen required for the combustion .of a cubic foot of such mixture:

No. 1 mixture, 95% H. with 2%% each of by-product coke-oven-gas and propane; net B. T. U.s 355; cu. ft. of oxygen .625.

No. 2 miXture,]75% H. with 12. each of by-product coke-oven gas and propane; net B. T. U.s 600; cu. ft. of oxygen 1.125.

Having thus described ourinvention what we claim is product coke-oven gas and propane with. hydrogen 1I1 proportions not substantially less than 5% by volume of such combined gases-to the hydrogen and not materially more than 25% of such combined gases to the hydrogen, the by-product coke-oven gas and propane being present in the proportions of atleast each in such mixture.

In testimony whereof, we hereunto aflix our signatures.

JAMES R. ROSE.

JOHN HARRIS. 

